i try to open this file with all the posible images but browser showing the arrow point and white screen only.. why?

Because that's what the code you wrote is telling the program to do. Step through it with a debugger like you were already told, and try to narrow it down. We can't really answer general questions like this, other than to point you towards a debugger and the basic tutorials. Throw together an SSCCE and ask a specific question, and we'll go from there.